TIRE PRESSURE MONITORING SYSTEM (TPMS) ON-BOARD DIAGNOSIS


id020200800200


On-Board Diagnostic (OBD) Test Description

•  The OBD test inspects the integrity and function of the TPMS and outputs the results when requested by the specific tests.
•  On-board diagnostic test also:
―  Provides a quick inspection of the TPMS usually performed at the start of each diagnostic procedure.
―  Provides verification after repairs to ensure that no other faults occurred during service.
•  The OBD test is divided into 2 tests:
―  Read/clear diagnostic results, and PID monitor.

Read/Clear Diagnostic Results

•  This function allows you to read or clear DTCs in the instrument cluster memory.


PID/Data Monitor And Record

•  This function allows you to access certain data values, input signals, calculated values, and system status information.


Reading DTCs Procedure

1.  Connect the M-MDS (IDS) to the DLC-2.

am3uuw00002679

2.  After the vehicle is identified, select the following items from the initialization screen of the IDS.

(1)  Select “Self Test”.
(2)  Select “Modules”.
(3)  Select “IC”.

3.  Verify the DTC according to the directions on the screen.

•  If any DTCs are displayed, perform troubleshooting according to the corresponding DTC inspection.

4.  After completion of repairs, clear all DTCs stored in the instrument cluster. (See Clearing DTCs Procedures)


Clearing DTCs Procedures

1.  Connect the M-MDS (IDS) to the DLC-2.

am3uuw00002679

2.  After the vehicle is identified, select the following items from the initialization screen of the IDS.

(1)  Select “Self Test”.
(2)  Select “Modules”.
(3)  Select “IC”.

3.  Verify the DTC according to the directions on the screen.

4.  Press the clear button on the DTC screen to clear the DTC.

5.  Switch the ignition to off.

6.  Switch the ignition to ON and wait for 5 s or more.

7.  Perform DTC inspection. (See Reading DTCs Procedure.)

8.  Verify that no DTCs are displayed.


PID/Data Monitor and Record Procedure

1.  Connect the M-MDS (IDS) to the DLC-2.

am3uuw00002679

2.  After the vehicle is identified, select the following items from the initialization screen of the IDS.

(1)  Select “DataLogger”.
(2)  Select “Modules”.
(3)  Select “IC”.

3.  Select the applicable PID from the PID table.

4.  Verify the PID data according to the directions on the screen.

Note
•  The PID data screen function is used for monitoring the calculated value of input/output signals in the module.Therefore, if the monitored value of the output parts is not within the specification, it is necessary to inspect the monitored value of input parts corresponding to the applicable output part control. In addition, because the system does not display an output part malfunction as an abnormality in the monitored value, it is necessary to inspect the output parts individually.

DTC Table

DTC No.

Description

Reference

M-MDS

C0077:00
Low tire pressure
C2011:49
Wheel unit No.1 internal malfunction
C2012:49
Wheel unit No.2 internal malfunction
C2013:49
Wheel unit No.3 internal malfunction
C2014:49
Wheel unit No.4 internal malfunction
C2011:87
Wheel unit No.1 (No response)
C2012:87
Wheel unit No.2 (No response)
C2013:87
Wheel unit No.3 (No response)
C2014:87
Wheel unit No.4 (No response)
U0100:00
Communication error with PCM
U0127:00
Communication error with keyless receiver
U0300:00
Incomplete configuration
U0401:68
Erratic signal from PCM
U2100:00
Incomplete configuration
U3000:42
Instrument cluster general memory failure


PID/Data Monitor Table

Note
•  When the wheel unit is in sleep mode, the data logger displays a value different from the actual value. (Such as, WU1_P: 0 KPa, WU1_T: -50 °C)

PID Name (Definition)

Unit/Condition

Condition/Specification

Action

WU1_ID
WU2_ID
WU3_ID
WU4_ID
(Wheel unit ID code)
Indicates the registered ID that is transmitted from the wheel unit.
•  Replace the wheel unit.
•  Perform the wheel unit ID registration.
WU1_P
WU2_P
WU3_P
WU4_P
(Tire pressure)
Pa, psi
Indicates the tire pressure.
•  Adjust tire pressure.
•  Replace the wheel unit.
•  Perform the wheel unit ID registration.
WU1_T
WU2_T
WU3_T
WU4_T
(Tire temperature)
°C, °F
Indicates the internal tire air temperature.
Adjust tire pressure.
WU1_VPWR
WU2_VPWR
WU3_VPWR
WU4_VPWR
(Supply voltage)
Normal/Error
Signal is normal: Normal
Signal is abnormal: Error
Replace the wheel unit.
WU1_ERR_T
WU2_ERR_T
WU3_ERR_T
WU4_ERR_T
(Tire temperature)
Normal/Error
Signal is normal: Normal
Signal is abnormal: Error
Replace the wheel unit.
WU1_ERR_P
WU2_ERR_P
WU3_ERR_P
WU4_ERR_P
(Tire pressure)
Normal/Error
Signal is normal: Normal
Signal is abnormal: Error
Replace the wheel unit.


Snapshot data table

Note
•  Snapshot data items are not displayed, according to detected DTC.
•  The tire pressure monitoring system (TPMS) does not identify the location of the malfunctioning wheel unit on the vehicle (RF, LF, LR, RR). The TPMS identifies each wheel unit as No.1, No.2, No.3 and No.4. In order to identify the location of the wheel unit, perform the MALFUNCTIONING WHEEL UNIT IDENTIFICATION procedure. (See.MALFUNCTIONING WHEEL UNIT IDENTIFICATION.)

Snapshot data item

Unit

Definition

Description

TOTAL_DIST
km, mile
Displays distance of odometer when a DTC is detected.
Displays distance of odometer when a DTC is detected. (display four last digits)
VSS
KPH, MPH
Vehicle speed
Vehicle speed signal is input from the speed sensor.
WU1_P
WU2_P
WU3_P
WU4_P
Pa, psi
Tire pressure
Tire pressure signal is input from the wheel unit.
WU1_T
WU2_T
WU3_T
WU4_T
°C, °F
Tire internal air temperature
Tire internal air temperature signal is input from the wheel unit.